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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A237271 Number of parts in the symmetric representation of sigma(n).

Table of values

n a(n)
1 1
2 1
3 2
4 1
5 2
6 1
7 2
8 1
9 3
10 2
11 2
12 1
13 2
14 2
15 3
16 1
17 2
18 1
19 2
20 1
21 4
22 2
23 2
24 1
25 3
26 2
27 4
28 1
29 2
30 1
31 2
32 1
33 4
34 2
35 3
36 1
37 2
38 2
39 4
40 1
41 2
42 1
43 2
44 2
45 3
46 2
47 2
48 1
49 3
50 3
51 4
52 2
53 2
54 1
55 4
56 1
57 4
58 2
59 2
60 1
61 2
62 2
63 5
64 1
65 4
66 1
67 2
68 2
69 4
70 3
71 2
72 1
73 2
74 2
75 4
76 2
77 3
78 2
79 2
80 1
81 5
82 2
83 2
84 1
85 4
86 2
87 4
88 1
89 2
90 1

List of values

[1, 1, 2, 1, 2, 1, 2, 1, 3, 2, 2, 1, 2, 2, 3, 1, 2, 1, 2, 1, 4, 2, 2, 1, 3, 2, 4, 1, 2, 1, 2, 1, 4, 2, 3, 1, 2, 2, 4, 1, 2, 1, 2, 2, 3, 2, 2, 1, 3, 3, 4, 2, 2, 1, 4, 1, 4, 2, 2, 1, 2, 2, 5, 1, 4, 1, 2, 2, 4, 3, 2, 1, 2, 2, 4, 2, 3, 2, 2, 1, 5, 2, 2, 1, 4, 2, 4, 1, 2, 1]

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